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Kiểm tra kích thước Image trước khi Upload trong Asp.net

<div style="text-align: justify;">(<b>How to check image width and height before uploading in ASP.Net</b>) – Bạn đang có một Hosting lưu trữ dữ liệu trên Server và cho phép người dùng Upload file ảnh lên đó. Tuy nhiên do không giới hạn kích thước file trước khi Upload lên dung lượng Hosting tăng lên nhanh chóng? Vậy làm sao để có thể kiểm tra kích thước hình ảnh trước khi tải lên Server? Bài viết dưới đây sẽ giúp bạn giải quyết dễ dàng vấn đề này,ngoài việc kiểm tra kích thước file ảnh, chương trình còn kiểm tra các định dạng file. Trong trường hợp không đúng định dạng file  hoặc quá dung lượng cho phép chương trình sẽ đưa ra cảnh báo.<br /><a name='more'></a><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgackK5M5Mz2KLvqsGFeLtDOiR7YOMI7i-jwCm2iOPtELjc6nSStXrWox3u5tyQFdWP8GZQ6g5b1hdAPVOB_OayqQiMQZeM72WzXlfOBQw48vbidXntc9_SCmwMgfPKXCMPSd9l3NTHFpk/s1600/Check-Image-Height-and-Width-Before-Upload.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgackK5M5Mz2KLvqsGFeLtDOiR7YOMI7i-jwCm2iOPtELjc6nSStXrWox3u5tyQFdWP8GZQ6g5b1hdAPVOB_OayqQiMQZeM72WzXlfOBQw48vbidXntc9_SCmwMgfPKXCMPSd9l3NTHFpk/s1600/Check-Image-Height-and-Width-Before-Upload.gif" /></a></div><div style="text-align: center;"><br /><b>Nghe những bài hát đỉnh nhất về Thấy cô giáo - <a href="https://www.youtube.com/watch?v=EXLGWIhgCx4&list=PL-dT-MN_dMzwvHPTb1hfqokY4b5RN_ngE" target="_blank">Nghe trên Youtube</a></b><br /><br /></div><iframe allowfullscreen="" frameborder="0" height="360" src="https://www.youtube.com/embed/videoseries?list=PL-dT-MN_dMzwvHPTb1hfqokY4b5RN_ngE&autoplay=1;loop=1&amp" width="640"></iframe><br /><br /></div><div style="clear: both; text-align: center;"><div style="float: left; margin: 6px 6px 0px; width: 280px;"><a href="http://adf.ly/1NZHX7" target="_blank"><img alt="Code Example C#, Code Example VB.NET" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiX5IGNs5gxA6HJ6wKUOVKQztkzufZYGTWmDGsjzESeAbw5gPpVperxnvMiiMPTFhfTdeeR-4kUkJSAALEa1Zdq5fGg0wgUcUViEOH5dYhX9XotYaD-DD8jE1pIm0L0ooHc0HY9SBYOeQw/s1600/CS_Code.png" /></a></div><div style="float: left; margin: 6px 6px 0px; width: 280px;"><a href="http://adf.ly/1NZHR5" target="_blank"><img alt="Code Example C#, Code Example VB.NET" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgulrYoUfYJfz40EKRawQ-iISxhV1T4-vVi8rbwkzWwWPOb5NPStwQVd3K3r6lWGkxR5-PlyV7SuGFcERHd7mBlFCaD_HCymi57mq0FBSJ9FMTOIyVXckid3Adhkoc8fUrFD8twfkZS1U8/s1600/VB_Code.png" /></a></div></div><br /><br /><br />- <b>B1</b>: Tạo Project trong Microsoft Visual Studio 2010<br /><br /><div style="text-align: start;">- <b>B2</b>: Mở file Default.aspx dưới dạng HTML và nhập mã HTML<br /><div class="code" id="code"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="background: yellow; font-family: Consolas; font-size: 9.5pt; mso-highlight: yellow;"><%</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">@</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: maroon;">Page</span><span style="color: red;">Title</span><span style="color: blue;">="How to check Image height and width before upload to the server in Asp.net"</span><span style="color: red;">Language</span><span style="color: blue;">="C#"</span><span style="color: red;">MasterPageFile</span><span style="color: blue;">="~/Site.master"</span><span style="color: red;">AutoEventWireup</span><span style="color: blue;">="true"</span><span style="color: red;">CodeBehind</span><span style="color: blue;">="Default.aspx.cs"</span><span style="color: red;">Inherits</span><span style="color: blue;">="CheckImageHeightWidthBeforeUpload._Default"</span><span style="background: yellow; mso-highlight: yellow;">%></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;"><</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt;">asp</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">:</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt;">Content</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: red;">ID</span><span style="color: blue;">="BodyContent"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span> <span style="color: red;">ContentPlaceHolderID</span><span style="color: blue;">="MainContent"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;"><</span><span style="color: maroon;">table</span> <span style="color: red;">cellpadding</span><span style="color: blue;">="3"</span><span style="color: red;">cellspacing</span><span style="color: blue;">="5"</span><span style="color: red;">border</span><span style="color: blue;">="0"</span><span style="color: red;">width</span><span style="color: blue;">="50%"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;"><</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;"><</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="panel panel-default"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="panel-heading"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblHeader"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span> <span style="color: red;">Text</span><span style="color: blue;">="File Upload"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="panel-body"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"><</span><span style="color: maroon;">table</span> <span style="color: red;">cellspacing</span><span style="color: blue;">="2"</span><span style="color: red;">cellpadding</span><span style="color: blue;">="3"</span><span style="color: red;">border</span><span style="color: blue;">="0"</span><span style="color: red;">width</span><span style="color: blue;">="100%"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"><</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">td</span> <span style="color: red;">style</span><span style="color: blue;">="</span><span style="color: red;">width</span><span style="color: blue;">:25%;"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="plFileName"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span> <span style="color: red;">Text</span><span style="color: blue;">="File Name (*)"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">FileUpload</span> <span style="color: red;">ID</span><span style="color: blue;">="FileUpload"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">Width</span><span style="color: blue;">="150px"</span><span style="color: blue;">/><</span><span style="color: maroon;">br</span> <span style="color: blue;">/></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">CustomValidator</span> <span style="color: red;">id</span><span style="color: blue;">="valFile"</span><span style="color: red;">OnServerValidate</span><span style="color: blue;">="valFile_ServerValidate"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">CssClass</span><span style="color: blue;">="NormalRed"</span><span style="color: red;">ValidationGroup</span><span style="color: blue;">="validate"</span><span style="color: red;">ErrorMessage</span><span style="color: blue;">="You Must Upload A File"</span> <span style="color: red;">Display</span><span style="color: blue;">="Dynamic"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">CustomValidator</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                             <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">CustomValidator</span> <span style="color: red;">id</span><span style="color: blue;">="valType"</span> <span style="color: red;">OnServerValidate</span><span style="color: blue;">="valType_ServerValidate"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">CssClass</span><span style="color: blue;">="NormalRed"</span><span style="color: red;">ValidationGroup</span><span style="color: blue;">="validate"</span><span style="color: red;">Display</span><span style="color: blue;">="Dynamic"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">CustomValidator</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"></</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"><</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">td</span> <span style="color: red;">colspan</span><span style="color: blue;">="2"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblMessage"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">Visible</span><span style="color: blue;">="false"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">><</span><span style="color: maroon;">br</span> <span style="color: blue;">/></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"></</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"></</span><span style="color: maroon;">table</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="modal-footer"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"><</span><span style="color: maroon;">div</span> <span style="color: red;">class</span><span style="color: blue;">="btn-group"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">LinkButton</span> <span style="color: red;">id</span><span style="color: blue;">="cmdUpload"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">CssClass</span><span style="color: blue;">="btn btn-small"</span> <span style="color: red;">ValidationGroup</span><span style="color: blue;">="validate"</span> <span style="color: red;">Causesvalidation</span><span style="color: blue;">="true"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">i</span> <span style="color: red;">class</span><span style="color: blue;">="icon-upload"></</span><span style="color: maroon;">i</span><span style="color: blue;">></span><span style="color: red;">&nbsp;&nbsp;</span><span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblUpload"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span> <span style="color: red;">Text</span><span style="color: blue;">="Upload"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">LinkButton</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;"></</span><span style="color: maroon;">tr</span><span style="color: blue;">></span>        <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;"></</span><span style="color: maroon;">table</span><span style="color: blue;">></span><o:p></o:p></span></div><span style="color: blue; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;"></</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;">asp</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;">:</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;">Content</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;">></span></div></div></div></div></div></div></div></div><div class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: start;"><span style="font-family: Consolas; font-size: 9.5pt;"><span style="color: blue;"><o:p></o:p></span></span></div><div style="text-align: start;"><span style="font-family: Consolas; font-size: 9.5pt;"><span style="color: blue;"><br /></span></span>- <b>B3</b>: Viết Code cho file Default.aspx<br /><div style="padding-bottom: 8px; padding-top: 8px;"><b>C# Code</b></div><div class="code" id="code"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: green; font-family: Consolas; font-size: 9.5pt;">//Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials</span><span style="font-family: Consolas; font-size: 9.5pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> Microsoft.VisualBasic;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.IO;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.Web.UI;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.Web.UI.WebControls;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">namespace</span><span style="font-family: Consolas; font-size: 9.5pt;"> CheckImageHeightWidthBeforeUpload<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">{<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;">public</span> <span style="color: blue;">partial</span> <span style="color: blue;">class</span> <span style="color: #2b91af;">_Default</span> : System.Web.UI.<span style="color: #2b91af;">Page</span> <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">        #region</span><span style="font-family: Consolas; font-size: 9.5pt;">"Private Members"<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">private</span> <span style="color: blue;">string</span> FileFilter = <span style="color: #a31515;">"gif,jpg,jpeg,png,bmp,tif"</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">private</span> <span style="color: blue;">int</span> Width = 150;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">private</span> <span style="color: blue;">int</span> Height = 150;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">        #endregion</span><span style="font-family: Consolas; font-size: 9.5pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">        #region</span><span style="font-family: Consolas; font-size: 9.5pt;">"Event Handles"<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">protected</span> <span style="color: blue;">void</span>valFile_ServerValidate(<span style="color: blue;">object</span> source, <span style="color: #2b91af;">ServerValidateEventArgs</span> args)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">if</span> (FileUpload.PostedFile != <span style="color: blue;">null</span>)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">if</span> (FileUpload.PostedFile.ContentLength > 0)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    args.IsValid = <span style="color: blue;">true</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">else</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    args.IsValid = <span style="color: blue;">false</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">protected</span> <span style="color: blue;">void</span>valType_ServerValidate(System.<span style="color: #2b91af;">Object</span> source, System.Web.UI.WebControls.<span style="color: #2b91af;">ServerValidateEventArgs</span>args)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">int</span> iWidth = 0;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">int</span> iHeight = 0;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                lblMessage.Visible = <span style="color: blue;">false</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">if</span> (FileUpload.PostedFile != <span style="color: blue;">null</span>)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;">if</span> (FileUpload.PostedFile.ContentLength > 0)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">string</span>[] arr = FileUpload.PostedFile.FileName.Split(<span style="color: #2b91af;">Convert</span>.ToChar(<span style="color: #a31515;">'.'</span>));<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">string</span> fileType = arr[arr.Length - 1].ToLower();<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">if</span>(FileFilter.IndexOf(fileType) <= -1)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            args.IsValid = <span style="color: blue;">false</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            valType.ErrorMessage = <span style="color: #a31515;">"You must upload a file that is either a gif, jpg, jpeg, png, bmp, tif"</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">return</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">else</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            System.Drawing.<span style="color: #2b91af;">Image</span> objImage = System.Drawing.<span style="color: #2b91af;">Image</span>.FromStream(FileUpload.PostedFile.InputStream);<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">if</span> ((objImage != <span style="color: blue;">null</span>))<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                iWidth = objImage.Width;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                iHeight = objImage.Height;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">if</span> ((iWidth > Width) | (iHeight > Height))<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                args.IsValid = <span style="color: blue;">false</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                valType.ErrorMessage = <span style="color: #a31515;">"Image Height and Width must not exceed 100px."</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;">return</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">else</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                args.IsValid = <span style="color: blue;">true</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Text = <span style="color: #a31515;">"Valid"</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.ForeColor = System.Drawing.<span style="color: #2b91af;">Color</span>.Green;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Visible = <span style="color: blue;">true</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">catch</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">        #endregion</span><span style="font-family: Consolas; font-size: 9.5pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    }<o:p></o:p></span></div><span style="font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;">}</span></div></div></div></div></div></div></div><div style="padding-bottom: 8px; padding-top: 8px;"><b>VB.NET Code</b></div><div class="code" id="code" style="text-align: start;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: green; font-family: Consolas; font-size: 9.5pt;">'Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials</span><span style="font-family: Consolas; font-size: 9.5pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">Imports</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.IO<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">Namespace</span><span style="font-family: Consolas; font-size: 9.5pt;"> CheckImageHeightWidthBeforeUpload<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;">Public</span> <span style="color: blue;">Class</span> <span style="color: #2b91af;">_Default</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Inherits</span> System.Web.UI.<span style="color: #2b91af;">Page</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">#Region</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: #a31515;">"Private Members"</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> FileFilter <span style="color: blue;">As</span><span style="color: blue;">String</span> = <span style="color: #a31515;">"gif,jpg,jpeg,png,bmp,tif"</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> Width <span style="color: blue;">As</span> <span style="color: blue;">Integer</span> = 150<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> Height <span style="color: blue;">As</span> <span style="color: blue;">Integer</span> = 150<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">#End</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: blue;">Region</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">#Region</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: #a31515;">"Event Handles"</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> <span style="color: blue;">Sub</span>valFile_ServerValidate(<span style="color: blue;">ByVal</span> source <span style="color: blue;">As</span> System.<span style="color: #2b91af;">Object</span>, <span style="color: blue;">ByVal</span> args <span style="color: blue;">As</span>System.Web.UI.WebControls.<span style="color: #2b91af;">ServerValidateEventArgs</span>) <span style="color: blue;">Handles</span> valFile.ServerValidate<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">If</span> <span style="color: blue;">Not</span>(FileUpload.PostedFile <span style="color: blue;">Is</span> <span style="color: blue;">Nothing</span>) <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;">If</span> (FileUpload.PostedFile.ContentLength > 0) <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        args.IsValid = <span style="color: blue;">True</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">Return</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                args.IsValid = <span style="color: blue;">False</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Catch</span> exc <span style="color: blue;">As</span> <span style="color: #2b91af;">Exception</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">End</span> <span style="color: blue;">Try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">End</span> <span style="color: blue;">Sub</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> <span style="color: blue;">Sub</span>valType_ServerValidate(<span style="color: blue;">ByVal</span> source <span style="color: blue;">As</span> System.<span style="color: #2b91af;">Object</span>, <span style="color: blue;">ByVal</span> args <span style="color: blue;">As</span>System.Web.UI.WebControls.<span style="color: #2b91af;">ServerValidateEventArgs</span>) <span style="color: blue;">Handles</span> valType.ServerValidate<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">Dim</span> iWidth <span style="color: blue;">As</span><span style="color: blue;">Integer</span> = 0<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">Dim</span> iHeight <span style="color: blue;">As</span><span style="color: blue;">Integer</span> = 0<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                lblMessage.Visible = <span style="color: blue;">False</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">If</span> <span style="color: blue;">Not</span>(FileUpload.PostedFile <span style="color: blue;">Is</span> <span style="color: blue;">Nothing</span>) <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;">If</span> (FileUpload.PostedFile.ContentLength > 0) <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">Dim</span> arr <span style="color: blue;">As</span> <span style="color: blue;">String</span>() = FileUpload.PostedFile.FileName.Split(<span style="color: #2b91af;">Convert</span>.ToChar(<span style="color: #a31515;">"."</span>))<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">Dim</span> fileType <span style="color: blue;">As</span> <span style="color: blue;">String</span> = arr(arr.Length - 1).ToLower()<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">If</span> FileFilter <> <span style="color: #a31515;">""</span><span style="color: blue;">And</span> InStr(<span style="color: #a31515;">","</span>& FileFilter.ToLower, <span style="color: #a31515;">","</span>& fileType.ToLower) = 0 <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            args.IsValid = <span style="color: blue;">False</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            valType.ErrorMessage = <span style="color: #a31515;">"You must upload a file that is either a gif, jpg, jpeg, png, bmp, tif"</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">Return</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">Else</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">Dim</span> objImage <span style="color: blue;">As</span>System.Drawing.<span style="color: #2b91af;">Image</span> = System.Drawing.<span style="color: #2b91af;">Image</span>.FromStream(FileUpload.PostedFile.InputStream)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">If</span> <span style="color: blue;">Not</span> objImage <span style="color: blue;">Is</span> <span style="color: blue;">Nothing</span> <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                iWidth = objImage.Width<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                iHeight = objImage.Height<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                          <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">If</span> (iWidth > Width) <span style="color: blue;">Or</span>(iHeight > Height) <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                args.IsValid = <span style="color: blue;">False</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                valType.ErrorMessage = <span style="color: #a31515;">"Image Height and Width must not exceed 100px."</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;">Return</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">Else</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                args.IsValid = <span style="color: blue;">True</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Text = <span style="color: #a31515;">"Valid"</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.ForeColor = System.Drawing.<span style="color: #2b91af;">Color</span>.Green<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Visible = <span style="color: blue;">True</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Catch</span> exc <span style="color: blue;">As</span> <span style="color: #2b91af;">Exception</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">End</span> <span style="color: blue;">Try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">End</span> <span style="color: blue;">Sub</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">#End</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: blue;">Region</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;">End</span> <span style="color: blue;">Class</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><span style="color: blue; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;">End</span><span style="font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;"> <span style="color: blue;">Namespace</span></span></div></div></div></div></div></div></div></div></div></div></div></div></div><br />Chạy Project, mỗi khi lựa chọn file và kích nút Upload nếu định dạng file không nằm trong danh sách không cho phép hoặc quá kích thước phần mềm sẽ đưa ra thông báo cho người sử dụng biết.<br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-WYtDoFR9xNG9mS6RW9e69Lan1vK2yClIH4jD7HwHjzcr_uwif3Ku1y2Lg5IWzBql3UppS3Yl0pcssRLhB5nFIHNlin7U36SvHeALhwPiITN0_7GhSEcW3qXRFigvwNpfGPXZfoSbS-k/s1600/Main.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-WYtDoFR9xNG9mS6RW9e69Lan1vK2yClIH4jD7HwHjzcr_uwif3Ku1y2Lg5IWzBql3UppS3Yl0pcssRLhB5nFIHNlin7U36SvHeALhwPiITN0_7GhSEcW3qXRFigvwNpfGPXZfoSbS-k/s1600/Main.gif" /></a></div><div class="separator" style="clear: both; text-align: center;"></div><div style="clear: both; text-align: center;"><div style="float: left; margin: 6px 6px 0px; width: 280px;"><a href="http://adf.ly/1NZHX7" target="_blank"><img alt="Code Example C#, Code Example VB.NET" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiX5IGNs5gxA6HJ6wKUOVKQztkzufZYGTWmDGsjzESeAbw5gPpVperxnvMiiMPTFhfTdeeR-4kUkJSAALEa1Zdq5fGg0wgUcUViEOH5dYhX9XotYaD-DD8jE1pIm0L0ooHc0HY9SBYOeQw/s1600/CS_Code.png" /></a></div><div style="float: left; margin: 6px 6px 0px; width: 280px;"><a href="http://adf.ly/1NZHR5" target="_blank"><img alt="Code Example C#, Code Example VB.NET" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgulrYoUfYJfz40EKRawQ-iISxhV1T4-vVi8rbwkzWwWPOb5NPStwQVd3K3r6lWGkxR5-PlyV7SuGFcERHd7mBlFCaD_HCymi57mq0FBSJ9FMTOIyVXckid3Adhkoc8fUrFD8twfkZS1U8/s1600/VB_Code.png" /></a></div></div><br /><br /><br />Chúc các bạn thành công!  <br /><div style="text-align: start;">Quang Bình</div>

Kiểm tra kích thước Image trước khi Upload trong Asp.net

( How to check image width and height before uploading in ASP.Net ) – Bạn đang có một Hosting lưu trữ dữ liệu trên Server và cho phép người ...

2:11:00 AM

Kiểm soát kích thước file và thư mục Upload lên Server trong Asp.net

<div style="text-align: justify;">(<b>Restrict the size of file upload in asp.net</b>) –  Khi xây dựng chức năng Upload file lên Server, khi không giới hạn dung lượng file nếu người dùng Upload file quá lớn trang Web thường hay xuất hiện lỗi. Vậy làm sao để có thể kiểm tra trước dung lượng file trước khi Upload lên Server?<br /><a name='more'></a>Bài viết dưới đây sẽ giúp chúng ta giải quyết vấn đề kiểm soát kích thước file upload, nếu dung lượng file vượt quá cho phép một cảnh báo sẽ xuất hiện. Ngoài ra chương trình còn kiểm tra dung lượng thư mục (Folder), nếu thư mục còn dung lượng cho phép việc Upload file mới được thực hiện thành công.<br /><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsP0IrXdvcxX5226jP3gHFVLqcXunstEdsy8hF-mlaBoftc_C9bzHVIvPD7aY-1Pe_DGF5noVAGupqx3-tdyAFzSSeCbmH9-jXY7v2MoccVS1pa74MwCroR-1gSSjSoAbM-C0VPyBvxkA/s1600/Upload.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsP0IrXdvcxX5226jP3gHFVLqcXunstEdsy8hF-mlaBoftc_C9bzHVIvPD7aY-1Pe_DGF5noVAGupqx3-tdyAFzSSeCbmH9-jXY7v2MoccVS1pa74MwCroR-1gSSjSoAbM-C0VPyBvxkA/s1600/Upload.gif" /></a></div><div style="text-align: center;"><br /><b>Nghe những bài hát đỉnh nhất về Thấy cô giáo - <a href="https://www.youtube.com/watch?v=EXLGWIhgCx4&list=PL-dT-MN_dMzwvHPTb1hfqokY4b5RN_ngE" target="_blank">Nghe trên Youtube</a></b><br /><br /></div><iframe allowfullscreen="" frameborder="0" height="360" src="https://www.youtube.com/embed/videoseries?list=PL-dT-MN_dMzwvHPTb1hfqokY4b5RN_ngE&autoplay=1;loop=1&amp" width="640"></iframe><br /><br /><div style="clear: both; text-align: center;"><div style="float: left; margin: 6px 6px 0px; width: 280px;"><a href="http://adf.ly/1NOUmj" target="_blank"><img alt="Code Example C#, Code Example VB.NET" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiX5IGNs5gxA6HJ6wKUOVKQztkzufZYGTWmDGsjzESeAbw5gPpVperxnvMiiMPTFhfTdeeR-4kUkJSAALEa1Zdq5fGg0wgUcUViEOH5dYhX9XotYaD-DD8jE1pIm0L0ooHc0HY9SBYOeQw/s1600/CS_Code.png" /></a></div><div style="float: left; margin: 6px 6px 0px; width: 280px;"><a href="http://adf.ly/1NOUk5" target="_blank"><img alt="Code Example C#, Code Example VB.NET" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgulrYoUfYJfz40EKRawQ-iISxhV1T4-vVi8rbwkzWwWPOb5NPStwQVd3K3r6lWGkxR5-PlyV7SuGFcERHd7mBlFCaD_HCymi57mq0FBSJ9FMTOIyVXckid3Adhkoc8fUrFD8twfkZS1U8/s1600/VB_Code.png" /></a></div></div><br /><br /><br />- <b>B1</b>: Tạo Project trong Microsoft Visual Studio 2010<br /><br />- <b>B2</b>: Mở file Default.aspx dưới dạng HTML và  nhập mã HTML</div><div style="padding-bottom: 8px; padding-top: 8px;"><b>C# Code</b></div><div class="code" id="code"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="background: yellow; font-family: Consolas; font-size: 9.5pt; mso-highlight: yellow;"><%</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">@</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: maroon;">Page</span><span style="color: red;">Title</span><span style="color: blue;">="Restrict the size of file uploads in ASP.NET"</span> <span style="color: red;">Language</span><span style="color: blue;">="C#"</span> <span style="color: red;">MasterPageFile</span><span style="color: blue;">="~/Site.master"</span> <span style="color: red;">AutoEventWireup</span><span style="color: blue;">="true"</span> <span style="color: red;">CodeBehind</span><span style="color: blue;">="Default.aspx.cs"</span> <span style="color: red;">Inherits</span><span style="color: blue;">="RestrictSizeofFileUpload._Default"</span> <span style="background: yellow; mso-highlight: yellow;">%></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;"><</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt;">asp</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">:</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt;">Content</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: red;">ID</span><span style="color: blue;">="BodyContent"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span> <span style="color: red;">ContentPlaceHolderID</span><span style="color: blue;">="MainContent"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;"><</span><span style="color: maroon;">table</span> <span style="color: red;">cellpadding</span><span style="color: blue;">="3"</span><span style="color: red;">cellspacing</span><span style="color: blue;">="5"</span><span style="color: red;">border</span><span style="color: blue;">="0"</span><span style="color: red;">width</span><span style="color: blue;">="50%"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;"><</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;"><</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="panel panel-default"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="panel-heading"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblHeader"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span> <span style="color: red;">Text</span><span style="color: blue;">="Restrict the size of file uploads"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="panel-body"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"><</span><span style="color: maroon;">table</span> <span style="color: red;">cellspacing</span><span style="color: blue;">="2"</span><span style="color: red;">cellpadding</span><span style="color: blue;">="3"</span><span style="color: red;">border</span><span style="color: blue;">="0"</span><span style="color: red;">width</span><span style="color: blue;">="100%"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"><</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">td</span> <span style="color: red;">style</span><span style="color: blue;">="</span><span style="color: red;">width</span><span style="color: blue;">:25%;"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="plFileName"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">Text</span><span style="color: blue;">="File Name (*)"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">FileUpload</span> <span style="color: red;">ID</span><span style="color: blue;">="FileUpload"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">Width</span><span style="color: blue;">="150px"</span><span style="color: blue;">/><</span><span style="color: maroon;">br</span> <span style="color: blue;">/></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblAllowed"</span><span style="color: red;">runat</span><span style="color: blue;">="server"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">><</span><span style="color: maroon;">br</span> <span style="color: blue;">/></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">CustomValidator</span> <span style="color: red;">id</span><span style="color: blue;">="valFile"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">CssClass</span><span style="color: blue;">="NormalRed"</span><span style="color: red;">ValidationGroup</span><span style="color: blue;">="validate"</span><span style="color: red;">OnServerValidate</span><span style="color: blue;">="valFile_ServerValidate"</span><span style="color: red;">ErrorMessage</span><span style="color: blue;">="You Must Upload A File"</span> <span style="color: red;">Display</span><span style="color: blue;">="Dynamic"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">CustomValidator</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"></</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"><</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">td</span> <span style="color: red;">colspan</span><span style="color: blue;">="2"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblMessage"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">Visible</span><span style="color: blue;">="false"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">><</span><span style="color: maroon;">br</span> <span style="color: blue;">/></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"></</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"></</span><span style="color: maroon;">table</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="modal-footer"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"><</span><span style="color: maroon;">div</span> <span style="color: red;">class</span><span style="color: blue;">="btn-group"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">LinkButton</span> <span style="color: red;">id</span><span style="color: blue;">="cmdUpload"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">CssClass</span><span style="color: blue;">="btn btn-small"</span> <span style="color: red;">OnClick</span><span style="color: blue;">="cmdUpload_Click"</span> <span style="color: red;">ValidationGroup</span><span style="color: blue;">="validate"</span> <span style="color: red;">Causesvalidation</span><span style="color: blue;">="true"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">i</span> <span style="color: red;">class</span><span style="color: blue;">="icon-upload"></</span><span style="color: maroon;">i</span><span style="color: blue;">></span><span style="color: red;">&nbsp;&nbsp;</span><span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblUpload"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span> <span style="color: red;">Text</span><span style="color: blue;">="Upload"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">LinkButton</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;"></</span><span style="color: maroon;">tr</span><span style="color: blue;">></span>        <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;"></</span><span style="color: maroon;">table</span><span style="color: blue;">></span></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;"></</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt;">asp</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">:</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt;">Content</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">><o:p></o:p></span></div></div></div></div></div></div></div></div><div style="text-align: start;"><div style="padding-bottom: 8px; padding-top: 8px;"><b>VB.NET Code</b></div><div class="code" id="code" style="text-align: start;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="background: yellow; font-family: Consolas; font-size: 9.5pt; mso-highlight: yellow;"><%</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">@</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: maroon;">Page</span><span style="color: red;">Title</span><span style="color: blue;">="Restrict the size of file uploads in ASP.NET"</span> <span style="color: red;">Language</span><span style="color: blue;">="vb"</span> <span style="color: red;">MasterPageFile</span><span style="color: blue;">="~/Site.Master"</span> <span style="color: red;">AutoEventWireup</span><span style="color: blue;">="false"</span> <span style="color: red;">CodeBehind</span><span style="color: blue;">="Default.aspx.vb"</span> <span style="color: red;">Inherits</span><span style="color: blue;">="RestrictSizeofFileUpload._Default"</span> <span style="background: yellow; mso-highlight: yellow;">%></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;"><</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt;">asp</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">:</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt;">Content</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: red;">ID</span><span style="color: blue;">="BodyContent"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span> <span style="color: red;">ContentPlaceHolderID</span><span style="color: blue;">="MainContent"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;"><</span><span style="color: maroon;">table</span> <span style="color: red;">cellpadding</span><span style="color: blue;">="3"</span><span style="color: red;">cellspacing</span><span style="color: blue;">="5"</span><span style="color: red;">border</span><span style="color: blue;">="0"</span><span style="color: red;">width</span><span style="color: blue;">="50%"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;"><</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;"><</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="panel panel-default"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="panel-heading"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblHeader"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span> <span style="color: red;">Text</span><span style="color: blue;">="Restrict the size of file uploads"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="panel-body"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"><</span><span style="color: maroon;">table</span> <span style="color: red;">cellspacing</span><span style="color: blue;">="2"</span><span style="color: red;">cellpadding</span><span style="color: blue;">="3"</span><span style="color: red;">border</span><span style="color: blue;">="0"</span><span style="color: red;">width</span><span style="color: blue;">="100%"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"><</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">td</span> <span style="color: red;">style</span><span style="color: blue;">="</span><span style="color: red;">width</span><span style="color: blue;">:25%;"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="plFileName"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">Text</span><span style="color: blue;">="File Name (*)"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">FileUpload</span> <span style="color: red;">ID</span><span style="color: blue;">="FileUpload"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">Width</span><span style="color: blue;">="150px"</span><span style="color: blue;">/><</span><span style="color: maroon;">br</span> <span style="color: blue;">/></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblAllowed"</span><span style="color: red;">runat</span><span style="color: blue;">="server"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">><</span><span style="color: maroon;">br</span> <span style="color: blue;">/></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">CustomValidator</span> <span style="color: red;">id</span><span style="color: blue;">="valFile"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">CssClass</span><span style="color: blue;">="NormalRed"</span><span style="color: red;">ValidationGroup</span><span style="color: blue;">="validate"</span><span style="color: red;">ErrorMessage</span><span style="color: blue;">="You Must Upload A File"</span> <span style="color: red;">Display</span><span style="color: blue;">="Dynamic"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">CustomValidator</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"></</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"><</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">td</span> <span style="color: red;">colspan</span><span style="color: blue;">="2"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                    <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblMessage"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">Visible</span><span style="color: blue;">="false"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">><</span><span style="color: maroon;">br</span> <span style="color: blue;">/></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"></</span><span style="color: maroon;">tr</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"></</span><span style="color: maroon;">table</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"><</span><span style="color: maroon;">div</span><span style="color: red;">class</span><span style="color: blue;">="modal-footer"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"><</span><span style="color: maroon;">div</span> <span style="color: red;">class</span><span style="color: blue;">="btn-group"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">LinkButton</span> <span style="color: red;">id</span><span style="color: blue;">="cmdUpload"</span><span style="color: red;">runat</span><span style="color: blue;">="server"</span><span style="color: red;">CssClass</span><span style="color: blue;">="btn btn-small"</span> <span style="color: red;">ValidationGroup</span><span style="color: blue;">="validate"</span> <span style="color: red;">Causesvalidation</span><span style="color: blue;">="true"></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                <span style="color: blue;"><</span><span style="color: maroon;">i</span> <span style="color: red;">class</span><span style="color: blue;">="icon-upload"></</span><span style="color: maroon;">i</span><span style="color: blue;">></span><span style="color: red;">&nbsp;&nbsp;</span><span style="color: blue;"><</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span> <span style="color: red;">id</span><span style="color: blue;">="lblUpload"</span> <span style="color: red;">runat</span><span style="color: blue;">="server"</span> <span style="color: red;">Text</span><span style="color: blue;">="Upload"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">label</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;"></</span><span style="color: maroon;">asp</span><span style="color: blue;">:</span><span style="color: maroon;">LinkButton</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;"></</span><span style="color: maroon;">div</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;"></</span><span style="color: maroon;">td</span><span style="color: blue;">></span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;"></</span><span style="color: maroon;">tr</span><span style="color: blue;">></span>        <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;"></</span><span style="color: maroon;">table</span><span style="color: blue;">></span><o:p></o:p></span></div><span style="color: blue; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;"></</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;">asp</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;">:</span><span style="color: maroon; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;">Content</span><span style="color: blue; font-family: Consolas; font-size: 9.5pt; line-height: 115%; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: Calibri; mso-fareast-language: EN-US; mso-fareast-theme-font: minor-latin;">></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;"><span style="color: blue;"></span></span></div></div></div></div></div></div></div></div></div></div></div><br />- <b>B3</b>: Viết Code cho file Default.aspx<br /><div style="text-align: start;"><div style="text-align: start;"><div style="padding-bottom: 8px; padding-top: 8px;"><b>C# Code</b></div><div class="code" id="code"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: green; font-family: Consolas; font-size: 9.5pt;">//Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials</span><span style="font-family: Consolas; font-size: 9.5pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> Microsoft.VisualBasic;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.Collections;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.Collections.Generic;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.Data;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.IO;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.Diagnostics;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.Web.UI;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.Web;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">using</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.Web.UI.WebControls;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">namespace</span><span style="font-family: Consolas; font-size: 9.5pt;"> RestrictSizeofFileUpload<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">{<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;">public</span> <span style="color: blue;">partial</span> <span style="color: blue;">class</span> <span style="color: #2b91af;">_Default</span> : System.Web.UI.<span style="color: #2b91af;">Page</span> <o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">        #region</span><span style="font-family: Consolas; font-size: 9.5pt;">"Private Members"<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">private</span> <span style="color: blue;">string</span>FilePath = <span style="color: #a31515;">""</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">private</span> <span style="color: blue;">long</span>RestrictFileSize = 2;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">private</span> <span style="color: blue;">long</span>RestrictFolderSize = 100;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">        #endregion</span><span style="font-family: Consolas; font-size: 9.5pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">        #region</span><span style="font-family: Consolas; font-size: 9.5pt;">"Private Methods"<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">public</span> <span style="color: blue;">long</span>GetFolderSize(<span style="color: blue;">string</span> DirPath, <span style="color: blue;">bool</span> IncludeSubFolders = <span style="color: blue;">true</span>)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: #2b91af;">DirectoryInfo</span> objDir = <span style="color: blue;">new</span><span style="color: #2b91af;">DirectoryInfo</span>(DirPath);<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: #2b91af;">DirectoryInfo</span> objFolder = <span style="color: blue;">null</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">long</span>TotalSize = 0;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: #2b91af;">FileInfo</span> objFileInfo = <span style="color: blue;">null</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">foreach</span> (<span style="color: #2b91af;">FileInfo</span>objFileInfo_loopVariable <span style="color: blue;">in</span> objDir.GetFiles())<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                objFileInfo = objFileInfo_loopVariable;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                TotalSize += objFileInfo.Length;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">if</span> (IncludeSubFolders)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">foreach</span> (<span style="color: #2b91af;">DirectoryInfo</span>objFolder_loopVariable <span style="color: blue;">in</span>objDir.GetDirectories())<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    objFolder = objFolder_loopVariable;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    TotalSize += GetFolderSize(objFolder.FullName);<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">return</span> TotalSize;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">protected</span> <span style="color: blue;">string</span>UploadFile(<span style="color: #2b91af;">FileUpload</span> file)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">string</span> fileName = <span style="color: blue;">null</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">string</span> fileExtension = <span style="color: #a31515;">""</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            fileExtension = <span style="color: #2b91af;">Path</span>.GetExtension(file.FileName).Replace(<span style="color: #a31515;">"."</span>, <span style="color: #a31515;">""</span>);<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            fileName = file.FileName.Substring(file.FileName.LastIndexOf(<span style="color: #a31515;">"\\\\"</span>) + 1);<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            fileName = fileName.Substring(0, fileName.LastIndexOf(fileExtension)) + fileExtension;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            FilePath = FilePath + fileName;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            file.SaveAs(FilePath);<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">return</span> fileName;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">private</span> <span style="color: blue;">void</span>SetFilePath()<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            FilePath = MapPath(<span style="color: #a31515;">"~/Upload/"</span>);<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">if</span> (!<span style="color: #2b91af;">Directory</span>.Exists(FilePath))<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: #2b91af;">Directory</span>.CreateDirectory(FilePath);<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">        #endregion</span><span style="font-family: Consolas; font-size: 9.5pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">        #region</span><span style="font-family: Consolas; font-size: 9.5pt;">"Event Handles"<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">protected</span> <span style="color: blue;">void</span>Page_Load(<span style="color: blue;">object</span> sender, System.<span style="color: #2b91af;">EventArgs</span> e)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">if</span> (!IsPostBack)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    lblAllowed.Text = <span style="color: #a31515;">"Allowed only max  "</span> + RestrictFileSize + <span style="color: #a31515;">" MB to upload"</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">catch</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">protected</span> <span style="color: blue;">void</span>cmdUpload_Click(<span style="color: blue;">object</span> sender, System.<span style="color: #2b91af;">EventArgs</span> e)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">if</span> (Page.IsValid)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    SetFilePath();<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;">if</span> (FileUpload.HasFile)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">long</span> FolderSize = 0;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        FolderSize = (GetFolderSize(FilePath, <span style="color: blue;">true</span>) / 1024) / 1024;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">if</span> (FolderSize < RestrictFolderSize)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: green;">//1MB=1024KB</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">long</span> filesize = ((FileUpload.PostedFile.ContentLength) / 1024) / 1024;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">if</span> (filesize < RestrictFileSize)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                UploadFile(FileUpload);<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Text = <span style="color: #a31515;">"File uploaded successfully."</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.ForeColor = System.Drawing.<span style="color: #2b91af;">Color</span>.Green;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Visible = <span style="color: blue;">true</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">else</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Text = <span style="color: #a31515;">"You are allowed to upload more then "</span>+ RestrictFileSize + <span style="color: #a31515;">" MB."</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.ForeColor = System.Drawing.<span style="color: #2b91af;">Color</span>.Red;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Visible = <span style="color: blue;">true</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">else</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            lblMessage.Text = <span style="color: #a31515;">"The File Exceeds The Amount Of Disk Space You Currently Have Available."</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            lblMessage.ForeColor = System.Drawing.<span style="color: #2b91af;">Color</span>.Red;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            lblMessage.Visible = <span style="color: blue;">true</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">catch</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">protected</span> <span style="color: blue;">void</span>valFile_ServerValidate(<span style="color: blue;">object</span> source, <span style="color: #2b91af;">ServerValidateEventArgs</span> args)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">if</span> (FileUpload.PostedFile != <span style="color: blue;">null</span>)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">if</span> (FileUpload.PostedFile.ContentLength > 0)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    args.IsValid = <span style="color: blue;">true</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">else</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                {<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    args.IsValid = <span style="color: blue;">false</span>;<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            }<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        }</span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">        #endregion</span><span style="font-family: Consolas; font-size: 9.5pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    }</span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">}<o:p></o:p></span></div></div></div></div></div></div></div></div></div><div style="text-align: start;"><div style="padding-bottom: 8px; padding-top: 8px;"><b>VB.NET Code</b></div><div class="code" id="code" style="text-align: start;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: green; font-family: Consolas; font-size: 9.5pt;">'Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials</span><span style="font-family: Consolas; font-size: 9.5pt;"><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">Imports</span><span style="font-family: Consolas; font-size: 9.5pt;"> System.IO<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">Namespace</span><span style="font-family: Consolas; font-size: 9.5pt;"> RestrictSizeofFileUpload<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;">Public</span> <span style="color: blue;">Class</span> <span style="color: #2b91af;">_Default</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Inherits</span> System.Web.UI.<span style="color: #2b91af;">Page</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">#Region</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: #a31515;">"Private Members"</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> FilePath <span style="color: blue;">As</span> <span style="color: blue;">String</span> = <span style="color: #a31515;">""</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> RestrictFileSize <span style="color: blue;">As</span><span style="color: blue;">Long</span> = 2<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> RestrictFolderSize <span style="color: blue;">As</span><span style="color: blue;">Long</span> = 100<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">#End</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: blue;">Region</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">#Region</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: #a31515;">"Private Methods"</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Function</span> GetFolderSize(<span style="color: blue;">ByVal</span>DirPath <span style="color: blue;">As</span> <span style="color: blue;">String</span>, <span style="color: blue;">Optional</span> <span style="color: blue;">ByVal</span>IncludeSubFolders <span style="color: blue;">As</span> <span style="color: blue;">Boolean</span>= <span style="color: blue;">True</span>) <span style="color: blue;">As</span> <span style="color: blue;">Long</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Dim</span> objDir <span style="color: blue;">As</span> <span style="color: #2b91af;">DirectoryInfo</span> = <span style="color: blue;">New</span><span style="color: #2b91af;">DirectoryInfo</span>(DirPath)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Dim</span> objFolder <span style="color: blue;">As</span> <span style="color: #2b91af;">DirectoryInfo</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Dim</span> TotalSize <span style="color: blue;">As</span> <span style="color: blue;">Long</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Dim</span>objFileInfo <span style="color: blue;">As</span> <span style="color: #2b91af;">FileInfo</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">For</span> <span style="color: blue;">Each</span> objFileInfo <span style="color: blue;">In</span> objDir.GetFiles()<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                TotalSize += objFileInfo.Length<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Next</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">If</span> IncludeSubFolders <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">For</span> <span style="color: blue;">Each</span>objFolder <span style="color: blue;">In</span> objDir.GetDirectories()<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    TotalSize += GetFolderSize(objFolder.FullName)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">Next</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Return</span> TotalSize<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">End</span> <span style="color: blue;">Function</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Protected</span> <span style="color: blue;">Function</span>UploadFile(<span style="color: blue;">ByVal</span> file <span style="color: blue;">As</span><span style="color: #2b91af;">FileUpload</span>) <span style="color: blue;">As</span><span style="color: blue;">String</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Dim</span> fileName <span style="color: blue;">As</span> <span style="color: blue;">String</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Dim</span> fileExtension <span style="color: blue;">As</span> <span style="color: blue;">String</span> = <span style="color: #a31515;">""</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            fileExtension = Replace(<span style="color: #2b91af;">Path</span>.GetExtension(file.FileName), <span style="color: #a31515;">"."</span>, <span style="color: #a31515;">""</span>)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            fileName = file.FileName.Substring(file.FileName.LastIndexOf(<span style="color: #a31515;">"\\"</span>) + 1)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            fileName = fileName.Substring(0, fileName.LastIndexOf(fileExtension)) & fileExtension<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            FilePath = FilePath + fileName<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            file.SaveAs(FilePath)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Return</span> fileName<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">End</span> <span style="color: blue;">Function</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> <span style="color: blue;">Sub</span>SetFilePath()<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            FilePath = MapPath(<span style="color: #a31515;">"~/Upload/"</span>)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">If</span> <span style="color: blue;">Not</span> <span style="color: #2b91af;">Directory</span>.Exists(FilePath) <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: #2b91af;">Directory</span>.CreateDirectory(FilePath)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">End</span> <span style="color: blue;">Sub</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">#End</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: blue;">Region</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">#Region</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: #a31515;">"Event Handles"</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Protected</span> <span style="color: blue;">Sub</span>Page_Load(<span style="color: blue;">ByVal</span> sender <span style="color: blue;">As</span><span style="color: blue;">Object</span>, <span style="color: blue;">ByVal</span> e <span style="color: blue;">As</span> System.<span style="color: #2b91af;">EventArgs</span>) <span style="color: blue;">Handles</span> <span style="color: blue;">Me</span>.Load<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">If</span> Page.IsPostBack = <span style="color: blue;">False</span> <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    lblAllowed.Text = <span style="color: #a31515;">"Allowed only max  "</span> & RestrictFileSize & <span style="color: #a31515;">" MB to upload"</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Catch</span> ex <span style="color: blue;">As</span> <span style="color: #2b91af;">Exception</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">End</span> <span style="color: blue;">Try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">End</span> <span style="color: blue;">Sub</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> <span style="color: blue;">Sub</span>cmdUpload_Click(<span style="color: blue;">ByVal</span> sender <span style="color: blue;">As</span> <span style="color: blue;">Object</span>, <span style="color: blue;">ByVal</span> e <span style="color: blue;">As</span> System.<span style="color: #2b91af;">EventArgs</span>) <span style="color: blue;">Handles</span>cmdUpload.Click<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">If</span> Page.IsValid <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">Try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    SetFilePath()<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;">If</span> FileUpload.HasFile <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">Dim</span> FolderSize <span style="color: blue;">As</span> <span style="color: blue;">Long</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        FolderSize = (GetFolderSize(FilePath, <span style="color: blue;">True</span>) / 1024) / 1024<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">If</span> FolderSize < RestrictFolderSize <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: green;">'1MB=1024KB</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">Dim</span> filesize <span style="color: blue;">As</span> <span style="color: blue;">Long</span> = ((FileUpload.PostedFile.ContentLength) / 1024) \ 1024<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">If</span> filesize < RestrictFileSize <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                UploadFile(FileUpload)<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Text = <span style="color: #a31515;">"File uploaded successfully."</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.ForeColor = System.Drawing.<span style="color: #2b91af;">Color</span>.Green<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Visible = <span style="color: blue;">True</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">Else</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Text = <span style="color: #a31515;">"You are allowed to upload more then "</span>& RestrictFileSize & <span style="color: #a31515;">" MB."</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.ForeColor = System.Drawing.<span style="color: #2b91af;">Color</span>.Red<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                                lblMessage.Visible = <span style="color: blue;">True</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">Else</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            lblMessage.Text = <span style="color: #a31515;">"The File Exceeds The Amount Of Disk Space You Currently Have Available."</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            lblMessage.ForeColor = System.Drawing.<span style="color: #2b91af;">Color</span>.Red<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                            lblMessage.Visible = <span style="color: blue;">True</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">Catch</span> ex <span style="color: blue;">As</span><span style="color: #2b91af;">Exception</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">End</span> <span style="color: blue;">Try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">End</span> <span style="color: blue;">Sub</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">Private</span> <span style="color: blue;">Sub</span>valFile_ServerValidate(<span style="color: blue;">ByVal</span> source <span style="color: blue;">As</span> System.<span style="color: #2b91af;">Object</span>, <span style="color: blue;">ByVal</span> args <span style="color: blue;">As</span>System.Web.UI.WebControls.<span style="color: #2b91af;">ServerValidateEventArgs</span>) <span style="color: blue;">Handles</span> valFile.ServerValidate<o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">If</span> <span style="color: blue;">Not</span>(FileUpload.PostedFile <span style="color: blue;">Is</span> <span style="color: blue;">Nothing</span>) <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;">If</span> (FileUpload.PostedFile.ContentLength > 0) <span style="color: blue;">Then</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        args.IsValid = <span style="color: blue;">True</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                        <span style="color: blue;">Return</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                    <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                <span style="color: blue;">End</span> <span style="color: blue;">If</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">                args.IsValid = <span style="color: blue;">False</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">Catch</span> exc <span style="color: blue;">As</span> <span style="color: #2b91af;">Exception</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">            <span style="color: blue;">End</span> <span style="color: blue;">Try</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">        <span style="color: blue;">End</span> <span style="color: blue;">Sub</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">#End</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: blue;">Region</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="font-family: Consolas; font-size: 9.5pt;">    <span style="color: blue;">End</span> <span style="color: blue;">Class</span><o:p></o:p></span></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><br /></div><div class="MsoNormal" style="margin-bottom: 0.0001pt;"><span style="color: blue; font-family: Consolas; font-size: 9.5pt;">End</span><span style="font-family: Consolas; font-size: 9.5pt;"> <span style="color: blue;">Namespace</span><o:p></o:p></span></div></div></div></div></div></div></div></div></div></div></div></div><br /><div style="clear: both; text-align: center;"><div style="float: left; margin: 6px 6px 0px; width: 280px;"><a href="http://adf.ly/1NOUmj" target="_blank"><img alt="Code Example C#, Code Example VB.NET" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiX5IGNs5gxA6HJ6wKUOVKQztkzufZYGTWmDGsjzESeAbw5gPpVperxnvMiiMPTFhfTdeeR-4kUkJSAALEa1Zdq5fGg0wgUcUViEOH5dYhX9XotYaD-DD8jE1pIm0L0ooHc0HY9SBYOeQw/s1600/CS_Code.png" /></a></div><div style="float: left; margin: 6px 6px 0px; width: 280px;"><a href="http://adf.ly/1NOUk5" target="_blank"><img alt="Code Example C#, Code Example VB.NET" border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgulrYoUfYJfz40EKRawQ-iISxhV1T4-vVi8rbwkzWwWPOb5NPStwQVd3K3r6lWGkxR5-PlyV7SuGFcERHd7mBlFCaD_HCymi57mq0FBSJ9FMTOIyVXckid3Adhkoc8fUrFD8twfkZS1U8/s1600/VB_Code.png" /></a></div></div><div style="text-align: start;"><br /></div><div style="text-align: start;"><br /></div><div style="text-align: start;"><br /></div><div style="text-align: start;">Chúc các bạn thành công!</div><div style="text-align: start;"><br /></div><div style="text-align: start;">Quang Bình</div></div></div></div>

Kiểm soát kích thước file và thư mục Upload lên Server trong Asp.net

( Restrict the size of file upload in asp.net ) – Khi xây dựng chức năng Upload file lên Server, khi không giới hạn dung lượng file nếu ngư...

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